复合材料科学与工程Issue(1)：55-61,101,8.DOI:10.19936/j.cnki.2096-8000.20260128.008
聚碳硅烷改性短切碳纤维的制备及其复合材料高温抗氧化性能研究
Preparation of polycarbosilane modified chopped carbon fibers and high-temperature oxidation resistance of composites
谢勇 1傅华东 1窦继鹏 1刘迪至 1秦岩1
作者信息
- 1. 武汉理工大学材料科学与工程学院,武汉 430070
- 折叠
摘要
Abstract
Derivative coatings of polycarbosilane are prepared on the surface of short-cut carbon fibers by chemi-cal grafting method,and boron phenolic resin composites reinforced by short-cut carbon fibers are prepared using a molding process.The basic mechanism of the chemical grafting of polycarbosilane is investigated by scanning electron microscopy and Fourier infrared spectroscopy analysis.The flexural strength of the composites after oxidation at room temperature,800 ℃,1 000℃ and 1 200 ℃,as well as the microscopic morphology and physical phase evolution of the ablation center region after oxygen-acetylene flame ablation are tested to investigate the influence of polycar-bosilane-derived coating on the high-temperature oxidation and ablation resistance of the composites.The results show that the flexural strength retention of the poly carbosilane-modified short-cut carbon fiber/phenolic numerical composites is still 12.77％after high-temperature and long-time heat treatment.And the modified short-cut carbon fiber/phenolic composites show excellent ablation resistance under the protection of polycarbosilane-derived coating.The microscopic morphology shows that a composite ceramic film is formed on the surface of the material to enhance the surface densities and protect the internal materials.关键词
聚碳硅烷/涂层改性/短切碳纤维/树脂基复合材料/高温抗氧化性能/耐烧蚀性能Key words
polycarbosilane/coating modification/chopped carbon fiber/resin-based composite materials/high temperature antioxidant performance/ablation resistance分类
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谢勇,傅华东,窦继鹏,刘迪至,秦岩..聚碳硅烷改性短切碳纤维的制备及其复合材料高温抗氧化性能研究[J].复合材料科学与工程,2026,(1):55-61,101,8.
